I was so disappointed when I tried to place a repeat order for this product in early May, only to find out that it was out of stock - which meant I had to temporarily source another brand. Anyway, I'm very pleased that it's available again - and that I can finally write my review.....Like many guys out there, I was initially confused about BCAA's (Branched Chain Amino Acids) and EAA's (Essential Amino Acids). If you read fitness/bodybuilding magazines, peruse various nutrition supplement websites or watch 'professional' bodybuilders on the internet, you will get conflicting messages about the potential benefits of supplementing your diet with BCAA's or EAA's. Some will tell you BCAA's alone are best - while others will swear by EAA's. The bottom line is that it's all to do with marketing. Many of those individuals/companies are really only serving their own interests and are out there to line their pockets with your hard-earned cash. So, who do you trust and what amino supplements should you invest in? To come up with some definitive answers, I decided to do my own research. Here's what I concluded.....Essential Amino Acids (EAA’s) are called "essential" because the body cannot make them; they must be obtained from food and/or supplement sources. Many of us don't eat enough EAA-rich foods, and many more don't absorb or utilize them well. As we age, the body's ability to extract the maximum nutrients from any protein source decline; and the excess calories in this protein can end up being be stored as fat. There are eight Essential Amino Acids:MethionineLysinePhenylalanineThreonineTryptophanLeucine (Branched Chain)Isoleucine (Branched Chain)Valine (Branched Chain)Because the three BCAA’s are the most important for energy production and muscle metabolism, they have been heavily promoted in the bodybuilding industry and there is no doubt that taking a BCAA product can be beneficial. However, my understanding (from reading scientific data) is that you really need all eight amino acids to receive the most benefit. Just taking a BCAA supplement would be like picking a football side consisting of just your two best strikers and a goalie. You may think these positions are the most important ones - but you're unlikely to win a game without the rest of the team! In other words, it makes sense to take the eight EAA's (which include those three BCAA's).While bodybuilders have popularised the use of EAA’s for muscular growth and maintenance, anyone can benefit from their use. EAA’s stimulate the production of cellular energy and promote cellular repair. They initiate the creation of the critical enzymes necessary for healthy (and complete) digestion. They are especially important for those who cope with any form of physical or mental stress including intensive training, injury, or surgery.Because the effects of EAA's have been well-studied, they offer several, scientifically-proven benefits:EAA’s prevent muscular breakdown during periods of intense physical and mental stress.EAA’s improve, enhance and protect the mitochondria, our cells' energy factories.EAA’s can curb hunger and improve metabolism.It seems to me that, regardless of our age or level of athletic ability, we all need EAA’s to look, feel, and perform at our very best. By the way, I always look long and hard at the products available on Amazon before making my choice. I chose this Love Life brand based on the quality of its ingredients, the fact that it contains those eight EAA’s, the advantage of it being far quicker to digest than a food protein source and the competitive price. So, I highly recommend this product to you.